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Revision as of 09:45, 30 March 2009 by Flameman (talk | contribs) (finger board, model Adapt11C24DX)
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  • BSP
  • app
  • 68hc11 cross compiler build
  • buffalo
  • etc

Introduction to the 68HC11


interesting links


finger board, model eas


  • Improved silkscreen.
  • Jumper selectable reset address. Reset vector can be located at 0xFFFE,0xFFFF or 0xBFFE,0xBFFF.
  • Optional external battery backup capable.
  • Optional external memory mapped LCD capable.
  • Optional Low Dropout voltage regulator ready.
  • Optional remote reset through serial port.
  • Reset switch now added along side download switch on the communications board.
  • Smaller overall footprint, 2" x 4", with the attached communications board.
  • Same professional board quality as before.


  • Motorola 68HC11 CPU.
  • 256kbit (32Kbyte) Dallas battery-backed memory module, no need to use eproms or slower eeproms.
  • Compact size 2" X 2.85" (main CPU board)
  • Network capable Serial Peripheral Interface (SPI).
  • No expensive hardware programmer needed, programs can be downloaded using a standard serial port.
  • Expansion Ports, list of headers:
    • Port A of 68HC11, 8 multi function I/O pins (JP8).
    • Port E of 68HC11, 8 analog channels (JP7).
    • Memory mapped I/O, Finger Board can be easily expanded to have 32 digital inputs and 32 digital output lines (JP9).
    • IRQ and XIRQ lines brought out for external interrupts (JP11).
    • Standard 9 pin serial port (P1).
    • SPI high speed serial interface, an easy way to attach peripherals (JP4).
    • LCD display interface (JP2).
    • Sharp IR receiver input (JP10).
    • Speaker output (JP12).
    • Infrared transmitter output (JP13).
    • MODB select (JP18)
    • External A/D reference input (JP6)
    • SRAM battery backup (JP19)

Power requirements

  • 7 to 18 Volts DC. Can easily run from a 9 Volt DC battery.
  • Current consumption: 24ma. DC without communications board < 10ma in WAIT mode, or STOP mode

30ma. DC with communications board.

  • Dimensions:
  • CPU board only 2.85" long 2.0" wide.
  • Communications board 1.15" long 2.0" wide.
  • CPU board with attached communications board 4" long 2.0" wide.

Memory map

Reset vector can be located at 0xFFFE,0xFFFF or 0xBFFE,0xBFFF.

finger board, model Adapt11C24DX


  • Compact "DX" form factor (2.8" x 2.1")
  • Works with any 68HC11 E series microcontroller
  • 9.8304 MHz crystal
  • 32K EEPROM
  • 512 bytes internal RAM (on MCUs)
  • Hardware Write Protect switch for EEPROM
  • Design incorporates 68HC24 port replacement unit (PRU) for full 68HC11 port compatibility
  • 26 general purpose I/O lines (including 3 input captures and 5 output compares)
  • Pulse accumulator, hardware timer, real-time interrupt, watchdog, 2 hardware interrupts
  • 8 channel 8-bit analog-to-digital converter
  • Serial peripheral interface (SPI) port offers virtually unlimited expansion
  • Serial Communications Interface (SCI) port, with programmable baud rate up to 38,400
  • RS-232 serial port, utilizing on-chip SCI (4-pin connector)
  • SCI compatible with MIDI and RS485/RS422
  • On-board reset circuit and button, 5V regulator, and RS232 interface
  • Low power requirements (45 mA nominal; much less in STOP mode)
  • All port pins are brought out to standard 50-pin connector pattern
  • Virtual plug-in interchangeability with all Adapt11 family boards
  • 11 connector options for the ultimate in modular design capabilities
  • Use programming language of your choice: C, BASIC, assembler, etc.
  • Compatible with JBug11 and PCBug11 debug/monitor programs
  • Easy program-loading via MicroLoad, JBug11, PCBug11, ICC11, etc.
  • Compatible with BASIC11 Compiler/Simulator/Debugger/Terminal IDE for Windows
  • Low cost-- ideal for educational and embedded applications
  • Many accessories available

memory map

0000-01ff internal ram
0200-0fff 3.5K external ram
1000-103f internal register block
103f-1fff reserved
2000-7fff 24k external ram
8000-ffff 32k eeprom
e000-ffff 8k eeprom